3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { public function a(A $a) } class B { public function a(B $b) } $b = new B();
Output for 5.5.24 - 5.5.30, 5.6.8 - 5.6.16, 7.0.0
Parse error: syntax error, unexpected '}', expecting ';' or '{' in /in/Ba5C1 on line 5
Process exited with code 255.
preferences:
155.45 ms | 1395 KiB | 24 Q